execute a command as another user

-s [command]
            The -s (shell) option runs the shell specified by the SHELL environment variable if it is set
            or the shell as specified in the password database.  If a command is specified, it is passed
            to the shell for execution via the shell's -c option.  If no command is specified, an
            interactive shell is executed.

-p prompt   The -p (prompt) option allows you to override the default password prompt and use a custom
            one.  The following percent (`%') escapes are supported by the sudoers policy: